package com.jerry.lastgomall.seckill.scheduled;

import com.jerry.lastgomall.seckill.service.SeckillScheduledService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品定时上架
 *  每天晚上3点,上架最近三天需要秒杀的商品
 */
@Slf4j
@Service
public class SeckillScheduled {

    @Autowired
    SeckillScheduledService seckillScheduledService;

    @Autowired
    RedissonClient redisClient;

    private final String upload_lock="seckill:upload:lock";

    //TODO 幂等性处理
    @Scheduled(cron = "0 0 1/1 * * ? ")
    public void uploadSeckillSkuLatest3Days(){
        //分布式锁  让一个机器去执行
        log.info("上架秒杀的商品信息....");
        //分布式锁  锁的业务执行完成,状态已经更新完成,释放锁后,其他人获取到就会拿到最新的状态
        RLock lock = redisClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillScheduledService.uploadSeckillSkuLatest3Days();
        }finally {
            lock.unlock();
        }

        System.out.println("我是分支");

    }
}













